| 有机试剂萃取比色法直接测定岩石、水系沉积物和土样中三价铁 |
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| 引用本文： | 崔沂涛,王家圻. 有机试剂萃取比色法直接测定岩石、水系沉积物和土样中三价铁[J]. 国土资源, 1988, 0(3) |
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| 作者姓名： | 崔沂涛 王家圻 |
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| 作者单位： | 辽宁省地质实验研究中心，辽宁省地质实验研究中心 |
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| 摘 要： | 本文探讨了直接测定三价铁的萃取比色法。该方法基于Fe~(3+)与8-羟基喹啉形成的络合物能被萃取入氯仿层,而在同一体系中的Fe~(2+)与邻菲咯啉形成的络合物却不然,这就使比色法测定有机相中的三价铁成为可能.本方法重现性好,准确度高,RSD％(n=10):1.44,适用于岩石、水系沉积物和土样中三价铁的测定。
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| 关 键 词： | 直接测定 三价铁 |
DIRECT DETERMINATION OF FERRIC IRON IN THE ROCKS, EARTH AND SEDIMENT SAMPLES |
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| Cui Yitao Wang Jiaqi. DIRECT DETERMINATION OF FERRIC IRON IN THE ROCKS, EARTH AND SEDIMENT SAMPLES[J]. Land & Resources, 1988, 0(3) |
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| Authors: | Cui Yitao Wang Jiaqi |
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| Affiliation: | Geological Experiment and Research Centre of Liaoning |
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| Abstract: | An extracting colorimetric method of the direct determination of ferric iron has been investigated. The method is based that the complex of Fe~(+3) formed with 8-hydrcxyquinoline can be extracted into the chloroform layer,But the complex of Fe~(+2) formed with O-phenothrolin in the same system are not.So, it is possible to direct determination the ferric iron in the organic phase by the colorimetric method. It reproduces well and has a high accuracy, RSD% (n=10) =1.44. The method is suitable for determination of the ferric iron in recks, stream sediments and earth samplex. |
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| Keywords: | Direct determination Ferric iron |
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